Coherent light generators – Particular beam control device – Mode locking
Patent
1988-11-21
1989-11-07
Scott, Jr., Leon
Coherent light generators
Particular beam control device
Mode locking
372 64, 372 99, 372108, H01S 3098
Patent
active
048797219
ABSTRACT:
A laser array having effectively separate oscillation regions 70,72,74 that are locked in phase is formed with a ceramic body 60,64 having a single, unpartitioned and relatively wide cavity area 62. Effectively isolated separate side by side laser oscillation regions 70,72,74 within the cavity are provided by use of common reflector optics 66,68 on the respective ends of the common cavity, 62 with one of the end optic arrangements comprising a common substrate 100 provided with several separate areas 102,104,106 of high reflectivity, mutually spaced from one another by areas of relatively low reflectivity. Individual control of the several separate regions of laser energy oscillations is provided by employing a separate pair of exciting electrodes 76,78,82,84,88,90 for each such region and applying separate RF exciting signals to the separate pairs respectively. In a large array, whether using plural isolated regions of laser oscillations in a common cavity or plural bores 121,122,123,124,125 separated by intra-cavity partiitons 126,127,128,129, adjustment of exciting power 150,154 to the outer electrode pairs 134,135,142,143 provides frequency correction for distortion and phase de-locking due to transverse thermal gradients.
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Braski Michael T.
Robusto Paul F.
Tilton Richard A.
Wissman Charles H.
Denson-Low Wanda K.
Hughes Aircraft Company
Jr. Leon Scott
Szabo Joseph E.
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